21388122

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{853}}^1$

素因数の和:1067

約数の個数: 48

約数和(自身を含む): 53289600

約数和(自身を除く): 31901478

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 199, 398, 597, 853, 1194, 1393, 1706, 1791, 2559, 2786, 3582, 4179, 5118, 5971, 7677, 8358, 11942, 12537, 15354, 17913, 25074, 35826, 53739, 107478, 169747, 339494, 509241, 1018482, 1188229, 1527723, 2376458, 3055446, 3564687, 7129374, 10694061, 21388122]

約数ペア:

[(1, 21388122), (2, 10694061), (3, 7129374), (6, 3564687), (7, 3055446), (9, 2376458), (14, 1527723), (18, 1188229), (21, 1018482), (42, 509241), (63, 339494), (126, 169747), (199, 107478), (398, 53739), (597, 35826), (853, 25074), (1194, 17913), (1393, 15354), (1706, 12537), (1791, 11942), (2559, 8358), (2786, 7677), (3582, 5971), (4179, 5118)]